Siemens SIMOTICS S-1FT7 - Page 162

Technical data and characteristic curves
6.3 Data sheets and characteristics
S-1FT7 synchronous motors
160 Configuration Manual, 09/2018, A5E45099423B AA
Three-phase servomotor 1FT7044-5AK7
Technical specifications
Symbol
Unit
Value
Configuration data:
Rated speed
n
N
rpm
6000
Rated torque (100K)
M
N(100K)
Nm
2.0
Rated current (100K)
I
N(100K)
A
2.5
Static torque (100K)
M
0(100K)
Nm
5.0
Stall current (100K)
I
0(100K)
A
5.7
Static torque (60K)
M
0(60K)
Nm
4.4
Stall current (60K)
I
0(60K)
A
4.9
Optimum operating point:
Optimum speed
n
opt
rpm
4500
Optimum power
P
opt
kW
1.41
Limiting data:
Max. permissible speed (mech.)
n
max mech
rpm
9000
Maximum torque M
max
Nm 23.0
Maximum current
I
max
A
30.0
Motor data:
No. of poles
2p
6
Torque constant (100K)
k
T
Nm/A
0.885
Voltage constant (at 20 °C)
k
E
V/1000 rpm
56.5
Winding resistance (at 20 °C)
R
Str
W
0.61
Rotating field inductance
L
D
mH
4.2
Electrical time constant
T
el
ms
7
Mechanical time constant
T
mech
ms
1.3
Thermal time constant
T
th
min
35
Moment of inertia
J
mot
kgm
2 ,
10
-4
5.43
Shaft torsional stiffness
c
t
Nm/rad
12300
Weight
m
mot
kg
7.2
Motor data with integrated brake:
Moment of inertia (with brake)
J
mot
kgm
2 ,
10
-4
6.3
Shaft torsional stiffness (with brake)
c
t
Nm/rad
9500
Weight (with brake)
m
Mot
kg
8.1
Data with SINAMICS S120 Booksize / S120 Booksize Compact
Rated converter current I
N Inv
A 9
Maximum converter current
I
max Inv
A
27
Max. torque (converter operation) M
max Inv
Nm 21.9
Max. permissible speed (converter operation)
n
max Inv
rpm
9000
The rated data are valid for a 600 V DC-link voltage